public void TestRemoveAll()
{
HNode node1 = new HText("node 1");
HNode node2 = new HElement("node2", "value2");
HNode node3 = new HText("node 3");
HNode node4 = new HElement("node4", "value4");
var attr1 = new HAttribute("attr1", "value1");
var attr2 = new HAttribute("attr2", "value2");
var attr3 = new HAttribute("attr3", "value3");
var attr4 = new HAttribute("attr4", "value4");
// Create parent
var elm = new HElement("test", attr1, node1, attr2, node2, node3, node4, attr3, attr4);
Assert.Equal(4, elm.Attributes().Count());
Assert.Equal(4, elm.Nodes().Count());
// Remove all
elm.RemoveAll();
Assert.Equal(0, elm.Attributes().Count());
Assert.Equal(0, elm.Nodes().Count());
// Check no exception
elm.RemoveAll();
Assert.Equal(0, elm.Attributes().Count());
Assert.Equal(0, elm.Nodes().Count());
}